The A to Z of Anatomical Histological and Medical terms
A
emet- vomiting
B
eminence: Lt. eminens = projecting, hence, a projection (usually
smooth).
C emissary: adj.Lt. e = out, and emissum = sent out; emissary vein,
one connecting intra- with extra-cranial venous channels.
D
en- within inside in on
E
Enamel (ee-NAM-ehl) the hardened outer covering on the crown of a
tooth.
F
encephalon: Gk. en = within, and kephalos = head, hence, the
G
brain.
endo- within inside into on
H
endocardium: Gk. endo = within, and kardia = heart, the
I
endothelial lining of the chambers of the heart.
endocranium: Gk. endo = within, and kranion = skull, the outer
J endostial layer of the dura mater.
Endocardium (ehn-doh-CARD-ih-um) the innermost layer of cells in
K
the heart chambers (see endothelium)
L
Endochondral ossification (ehn-do-KOHN-dral OS’-if-iKA-shun)
where bone tissue develops by replacing hyaline cartilage.
M
endocranium : Gk. = within, the skull adj. endocranial
N
endocrine: Gk. endo = within, : krinein = to separate, organs that
ductlessly secrete products into the BS.
O
Endocrine gland (EHN-do-krihn gland) one of two main categories of
P
glands, here the cellular products are secreted into the extracellular
space and transported by the BS. (also = ductless glands).
Q Endocytosis (ehn’-do-sih-TO-sihs) the active process of bulk transport
of material into a cell. It includes phagocytosis and pinocytosis.
R
Endoderm (EN-do-derm) one of the 3 primary germ layers in an
S
embryo, it begins as the inner layer, later forms the organs of the
alimentary canal (GIT) & the respiratory tract.
T
endoderm: Gk. endo = within, and derm = skin, hence, the germ
U
layer of the embryo that gives rise to the organs of the GIT,
respiratory system and the lining of the BVs.
V
endolymph: Gk. endo = within, and Lt. lympha = clear water,
W
hence the fluid within the membranous labyrinth of the internal ear.
Endometrium (EN-do MEE-tree-uhm) the innermost layer of the
X uterine wall. The endometrium undergoes changes in response to
female hormones, resulting in a 28-day cycle involving menstruation
Y
during which much of the endometrium is sloughed off to be rebuilt
Z
again.
89 © A. L. Neill
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